Lock Nut Finish Zinc Plated Material Steel Material Grade/Class Grade A Thread Size 9/16 In.-12 Hex Width 7/8 in Hex Height 1/2 in Lock Type Serrated Dimensional Standards ASME B18.16.4 System of Measurement Inch Hex Type Flange Hex Thread Direction Right Hand Flange Diameter 1.188 in Pack Size Small Pack Package Quantity 25